关键词: 旅游业, 经济贡献, C-D函数, 乘数效应

Abstract: The quantitative research on economic contribution of tourism industry in Gansu is an important research direction according to the tourism statistics from 1991 to 2014 in Gansu Province. First, the C-D production function of GDP and GDP of tourism industry in Gansu Province is established. Then the income multiplier of Gansu tourism industry is calculated. Finally, the income multiplier is used to study the contribution of tourism industry to economic growth in Gansu province. The three main findings of our study were as follows. First, in the last five years, the tourism income multiplier of Gansu province is 6.29, and the contribution of tourism to the regional economy is enormous. Secondly, Gansu tourism income multiplier has three inflection points in 1997, 2003 and 2008. Thirdly, the economic marginal effect of tourism income is declining, because of the slow development of tourism infrastructure, technical conditions and tourism service quality.

Key words: tourism industry, economic contribution, Cobb-Douglas production function, multiplier effect